Hello, syzbot found the following issue on: HEAD commit: c4d6fe73 Merge tag 'xarray-5.9' of git://git.infradead.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10c4b837900000 kernel config: https://syzkaller.appspot.com/x/.config?x=ae5161e82506407f dashboard link: https://syzkaller.appspot.com/bug?extid=d0d781aeeb8e16f710f1 compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d0d781aeeb8e16f710f1@xxxxxxxxxxxxxxxxxxxxxxxxx divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8486 Comm: syz-executor.0 Not tainted 5.9.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:do_journal_end+0x15d6/0x4950 fs/reiserfs/journal.c:4075 Code: c6 41 84 f0 0f 85 3b 2c 00 00 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 40 84 d6 0f 85 24 2c 00 00 8b 4b 14 48 8d 7d 18 31 d2 <48> f7 f1 4a 8d 34 2a 48 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 RSP: 0018:ffffc900013ffb28 EFLAGS: 00010246 RAX: 0000000000000009 RBX: ffff888048daf000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880235f3018 RBP: ffff8880235f3000 R08: 0000000000000001 R09: ffff888048dafffb R10: ffffed10091b5fff R11: 0000000000000000 R12: 0000000000001000 R13: 0000000000000000 R14: ffffc900013ffd48 R15: ffffc90016d11000 FS: 000000000259f940(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcd5edb9f8 CR3: 000000002cd8f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_journal_release fs/reiserfs/journal.c:1916 [inline] journal_release+0x14d/0x4e0 fs/reiserfs/journal.c:1970 reiserfs_put_super+0xe0/0x5c0 fs/reiserfs/super.c:616 generic_shutdown_super+0x144/0x370 fs/super.c:464 kill_block_super+0x97/0xf0 fs/super.c:1446 deactivate_locked_super+0x94/0x160 fs/super.c:335 deactivate_super+0xad/0xd0 fs/super.c:366 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118 task_work_run+0xdd/0x190 kernel/task_work.c:141 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:165 [inline] exit_to_user_mode_prepare+0x1ac/0x1d0 kernel/entry/common.c:192 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:267 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460887 Code: 64 89 04 25 d0 02 00 00 58 5f ff d0 48 89 c7 e8 2f be ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffcd5edb9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000460887 RDX: 0000000000403188 RSI: 0000000000000002 RDI: 00007ffcd5edbaa0 RBP: 0000000000000596 R08: 0000000000000000 R09: 000000000000000b R10: 0000000000000005 R11: 0000000000000246 R12: 00007ffcd5edcb30 R13: 00000000025a0a60 R14: 0000000000000000 R15: 00007ffcd5edcb30 Modules linked in: ---[ end trace fb4ea409a588af8f ]--- RIP: 0010:do_journal_end+0x15d6/0x4950 fs/reiserfs/journal.c:4075 Code: c6 41 84 f0 0f 85 3b 2c 00 00 83 e2 07 38 d1 40 0f 9e c6 84 c9 0f 95 c2 40 84 d6 0f 85 24 2c 00 00 8b 4b 14 48 8d 7d 18 31 d2 <48> f7 f1 4a 8d 34 2a 48 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 RSP: 0018:ffffc900013ffb28 EFLAGS: 00010246 RAX: 0000000000000009 RBX: ffff888048daf000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880235f3018 RBP: ffff8880235f3000 R08: 0000000000000001 R09: ffff888048dafffb R10: ffffed10091b5fff R11: 0000000000000000 R12: 0000000000001000 R13: 0000000000000000 R14: ffffc900013ffd48 R15: ffffc90016d11000 FS: 000000000259f940(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562ae37a0da8 CR3: 000000002cd8f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
